31604554432 has 56 divisors (see below), whose sum is σ = 68484609792. Its totient is φ = 14351443200.

The previous prime is 31604554427. The next prime is 31604554433. The reversal of 31604554432 is 23445540613.

It is a junction number, because it is equal to n+sod(n) for n = 31604554391 and 31604554400.

It is not an unprimeable number, because it can be changed into a prime (31604554433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704053 + ... + 747595.

Almost surely, 2^31604554432 is an apocalyptic number.

31604554432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31604554432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34242304896).

31604554432 is an abundant number, since it is smaller than the sum of its proper divisors (36880055360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31604554432 is a wasteful number, since it uses less digits than its factorization.

31604554432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44597 (or 44587 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 31604554432 in words is "thirty-one billion, six hundred four million, five hundred fifty-four thousand, four hundred thirty-two".